Hundreds of troops were being deployed Wednesday in Israeli cities following a series of shooting and stabbing attacks.
The Israel Defence Force was preparing to deploy six companies to reinforce the police, IDF spokesman Peter Lerner posted on Twitter.
The exact number of soldiers was not disclosed, but the move follows a security cabinet meeting that ended early Wednesday.
The cabinet also decided that police will seal off Arab neighbourhoods in East Jerusalem, and demolish the homes of suspected terrorists as well as revoke their permanent residency.
On Tuesday, Palestinian attackers went after Israelis with knives and - in one instance - a gun, leaving three Israelis dead and 22 injured in separate assaults on a "Day of Rage" declared by Palestinian groups.
Two of the attackers were killed and three injured.
After four attacks in a matter of hours, Prime Minister Benjamin Netanyahu convened an emergency cabinet session.
Two Israelis were killed and 16 injured on a bus in Jerusalem, after two assailants boarded, one with a gun, the second with a knife, opening fire and stabbing passengers.
In another part of Jerusalem, a man rammed his vehicle into a bus stop in an ultra-Orthodox neighbourhood, then got out of his car and repeatedly stabbed a 60-year-old rabbi with a butcher's knife, killing him before being fatally shot by a security guard and border policemen who rushed to the scene.
Ra'anana, a town north of Tel Aviv, saw two separate stabbing incidents.
There were four stabbing attacks in Jerusalem on Monday.
Seven Israelis have been killed and many injured in a wave of knife attacks this month.
Eighteen Palestinians from the West Bank and Jerusalem have been killed, shot dead after or during so-called attempts to stab Israelis.
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